Large ringed features on Callisto
4 named features carry the IAU descriptor Large ringed feature — a multi-ring impact basin, the largest class of impact structure there is on Callisto, out of 10 in the mapped Solar System.
Named
4
of 154 named places on Callisto — 2.6%
Largest
3,000 km
Valhalla
Median size
1,120 km
Across the 4 with a measured diameter
Named between
1979–2000
IAU approval dates
How large ringed features on Callisto get their names
The IAU assigns each feature class on each world a naming theme. Across the 4 large ringed features with a recorded origin, 3 categories appear, led by Norse.
Norse2Eskimo1Teutonic1
All 4 large ringed features on Callisto
Every one has its own page, on the surface it sits on.
Large ringed features elsewhere in the Solar System
The same descriptor is used on 2 other worlds, for 6 more features.